22439489 has 2 divisors, whose sum is σ = 22439490. Its totient is φ = 22439488.

The previous prime is 22439429. The next prime is 22439497. The reversal of 22439489 is 98493422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19228225 + 3211264 = 4385^2 + 1792^2 .

It is a cyclic number.

It is not a de Polignac number, because 22439489 - 2²⁴ = 5662273 is a prime.

It is a super-2 number, since 2×22439489² = 1007061333162242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22439419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11219744 + 11219745.

It is an arithmetic number, because the mean of its divisors is an integer number (11219745).

Almost surely, 2^22439489 is an apocalyptic number.

It is an amenable number.

22439489 is a deficient number, since it is larger than the sum of its proper divisors (1).

22439489 is an equidigital number, since it uses as much as digits as its factorization.

22439489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 41.

The square root of 22439489 is about 4737.0337765315. The cubic root of 22439489 is about 282.0575013103.

The spelling of 22439489 in words is "twenty-two million, four hundred thirty-nine thousand, four hundred eighty-nine".